European trade compliance guidelines

List of contents of this article:

• 1,European trade compliance guidelines How to change the system of the mobile phone
• 2, How to change the system of Android phone (it's better to change it by yourself)?
• 3, Where can the system settings be modified

hand How to change the system

Set the fingerprint in the main system first, and then open the settings in the main system. After entering the settings interface, click Security and Privacy. The page jumps to the security and privacy interface and clicks on the privacy space. After entering the privacy space, click to enter. The password input box of the secondary system pops up on the page, and enter the password.

Back up the mobile phone system (you can click to back up the mobile phone system in the software tool). You can choose to back up applications and data or backup systems. It is recommended to back up the system, applications and data sometimes fail when restoring.Search for the rom package of your mobile phone model. First of all, turn off the mobile phone.

Click [Settings] on the mobile phone desktop, and then click the [Privacy] interface again after entering. On the [Privacy] interface, click the [Privacy Space] option. After entering, click the [Open] button. The first entry will prompt you to set the password. After the setting is completed, you can have a dual system.

There are two systems for switching on Huawei mobile phones. You need to set a different lock screen password from the main space. Enter a different lock screen password to switch. The following are the specific operation steps: Tools/raw materials: Huawei novaEMUI1 local settings. Click Security and Privacy. Click Security and Privacy on Huawei's settings page.

Open the settings and click the user and account. Enter the user and account interface and click More Users.Enter the multi-user interface, you can set the visitor mode and click the visitor. Enter the visitor interface, set the visitor to allow calls, and set according to the needs.

How to change the system of Android phone (it's better to change it by yourself)?

1. Connect the mobile phone to the computer, flash the next flash elf, flash into recovery. ( Some brand phones need to be unlocked in the tool, and the tool needs to be downloaded from the official website) backup mobile phone system (you can click backup mobile phone system in the software tool). You can choose to back up applications and data or backup systems.

2. Android phones can change the system by themselves. The specific operation steps are as follows: first, download and install the flash elf on the website. Then double-click to open it, and then click here to flash the machine with one click, which saves a lot of trouble.Then connect the device first. After plugging in the mobile phone, select USB debugging.

3. Click the transformer icon on the desktop of the mobile phone. Click the icon of the Android system to exit the parallel space and switch to the classic desktop. If you want to enter the parallel space again, you can click the parallel space icon on the right side of the Android system to switch back.

Where can the system settings be modified

Step 1: Open the settings First, we need to open the home screen of the vivo mobile phone and find the "Settings" icon. Usually, this icon will appear in the toolbar at the bottom of the home screen. If not, it can be found in the application list.

Step 1: Open the settings in Huawei mobile phone, and the system settings can be found in the "Settings" application. Open the main interface of the mobile phone, find the "Settings" icon in the application list, and click to enter.

Turn on the mobile phone and enter the standby interface of the mobile phone; find the setting button on the mobile phone startup interface; click the setting button to enter the mobile phone system settings.

The setting method of application permissions: enter "Mobile Phone Butler Permission Privacy Application Permission Management (Application Permission) "Modify according to the corresponding permission or application selection.

Permission management in the "Mobile Butler" APP enters the "Mobile Butler" APP Permission Privacy Permission Management (Application Permission), and set the application permission according to the actual needs. Permission management ColorOS12 and above in settings: Enter the mobile phone "Setting Permissions and Privacy Permissions Management" and set the application permissions according to actual needs.